Excursions with kids - Group of 15

[ladybub101]

We are a group of 15. 6 adults and 9 kids ranging in age from 5-14. We are looking for a fun excursion in st.kitts, preferably including a stop at a beach. Or is there something that we can do on our own? We've checked out Javins tours but it's a bit pricey. We definitely want to see monkeys...in their natural habitat and not on someone's shoulder. Any ideas?